HDMI Hot plug detection not recognizing HDMI connection SABRE SDB

I am attempting to boot the SABRE SDB using ArchLinuxARM-armv7-latest.tar.gz, u-boot.imx, and SABRE_SDB.dtb. I can get the board to boot all the way to root, but can only see the terminal through the Serial USB connector. At the terminal I remove the HDMI cable and reconnect it, but no message appears. I don't know if edid is active or if I'm missing some HDMI drivers. I will post the output of the uboot screen below (attached):

I still am not showing anything through the HDMI. Nothing appears to happen upon bootup. No light change on the HDMI monitor or anything. In the past, I have seen at least the monitor change to the HDMI input on boot. With this boot I get nothing. Any suggestions?